Gas-engine silencer.



T. B. HAUGENL GAS ENGINE 'SILENGER.

APPLIUATIOI PILED'JAN.

Patented Aug. 19, 1913.

THEOPHILUS 1B. HAUGEN, OF NORTHWOOD, IOWA.

GAS-ENGINE SILENCEB.

Specification of Letters Patent.

Patented Aug. 19, 1913.

Application filed January 28,1913. Serial fi'o. 744,712.

To all whom it may concern:

Be it known that I, THEOPHILUS B. HAUGEN, a citizen of the UnitedStates, residin at Northwood, in the county of Wort State of Iowa, haveinvented certain new and useful Improvements in Gas-Engine Silencers;and I do hereby, declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to gas engine silencers and has for an object toprovide an extremely simple and inexpensive silencer that divides theexhaust in such a manner that the gases are cooled and passed withoutback pressure or noise into the atmosphere.

With the above object in view the invention consists of certain noveldetails of construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of construction within the scope of theappended claims.

In the accompanying drawing illustrating this invention: Figure 1 is aside elevation. Fig. 2 is a longitudinal section. Fig. 3 is a plan. Fig.4 is an end elevation.

Referring now to the drawing in which like characters of'referencedesignate similar arts, 10 designates the exhaust pipe.

T e silencer comprising the subject-matter of this invention consists ofa boxor casing comprising an upper and lower series of synclinalrectangular plates 11 and 12 connected to other by side plates 13 and14, the

inner en s of the plates being arranged in stepped relation to produce atapered chamber 15 in axial alinement with the exhaust ipe 10 as clearlyshown in Fig. 2. The exaust gases pass from the exhaust pipe into thetapered chamber 15 and thence escape through the passages 16 between thesynclinal plates into the atmosphere. By virtue of the novel steppedrelation of the synclinal plates to produce a tapered chamber theexhaust gases will expand with resultant coolsynclinal plates beingarranged in stepped relation to produce a tapere chamber, the exhaustgases bein deslgned to enter the larger end of said 0 amber and esca efrom said chamber through the spaces etween said synclinal plates intothe atmosphere.

2. A silencer comprising a casingincluding an upper and a lower seriesof synclinal plates, slde plates connecting the side edges of bothseries of synclinal plates together, and an exhaust pipe entering oneend of said casing, the inner ends of said plates being disposed instepped relation and producin a chamber in prolongation of said pipe angradually increasing in diameter from said pipe to the opposite end ofsaid casing, the exhaust gases being designed to pass from said pipeinto said chamber and from thence escape through the spaces between saidplates into the atmosphere.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

. THEOPHILUS B. HAUGEN.

" Witnesses:

IVER 'IVERSON, O. E. GUNDERSON.

